The goal of this mod is to reduce server load. Direct thumb links affect load. Full attach links - not.

There can be 20 thumbs on thread page. But not 20 fullsize images, downloaded at once.

This parameter doesn't affect cacheing. It's fixed for each thumbnail.

great! thanks!

Could you maybe do the same for image.php (to display user's avatar)? It's hard to cache image served by PHP script.

It's already done in vbulletin settings. Please, read vb manual. This mod is NOT buggy, and works properly. Really.

Do attachments themselves need to be in a public accessible area or just the thumbnails?

Just the thumbnails

Fact my thumbs seem tons faster to load thanks!!

now Vitaly could you explain this part please

"CDN list
Enter up to 4 mirror domains, to load local images faster. For example:"

Thanks!

Ps. how do i know if i have a NGINX websever lol sorry :x

You'd better to read yahoo website optimization manuals.

In 2 words:

1. Browser allows only 2 parallel connections to each domain, and 8 total.
2. If you do mirrors for your images, it can download up to 8 images simultaniously
3. It's better to keep mirrors on separate domain, without cookies, to speed up requests

That can make some sence, ONLY if you have tons of thumbnails on each single page.

I did this feature for fun, and didn't meashured effect yet. Anyway, it's not as significant, as (direct links + proper cache headers for static files).

If you ask such question, then 99% you don't have nginx :)

Thanks for that i dont use any mirrors so i can leave that blank

Guess not than :)

Thanks mate the speed on pages like >>This<< is tons better

Nomination!

You also have to tune apache config. Remove ETAG headers, and add Expires (in next 7 days) headers instead for all static files.